Crude-oil burner.



No. 743,?7'1. PATENTED NOV. 1G, 1903. E; W.` TUCKER & G. L. GRUNDLL.

GRUDB 011. BURNER.

APPLICATION FILED SEPT. 29, 1902.

2 SHEETS-SHEET 1.

k.W0 MODEL.

WITNESSES: 1w@ a7@ QfbQMff w L S,v L sf MZ@ NK/NM E: u. v0 v mi Y mw60l s IMM Y No. 743,777. n PATENTE Novio, 190s. E. W. 'TUCKER & c; L. G RUNDELL.

GRUDE OIL BURNER. APPLI'oMIoN FILED SEPT. 29, 1902.

SHEETS-SHEET 2.

N0 MODEL.

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UNITED STATES atented November l0, ISO.

PATENT OFFICE.

EDWIN w. TUCKER ARDCHARLES L. GRUNDELL, CE SAN FRANCISCO, CALIFORNIA.

CRuD'E-OIL BURNER'.

SPECIFICATION forming part of Letters Patent No.4'74`3,777, dated November l, 19043. Application filed September 29, 1902. Serial No. 125,809. (No model.)

To all whom t may concern:

Be it known that we, EDWIN W. TUCKER,

residing at 818 Page street, and CHARLES L.

GRUNDELL, residing at 1638 Hyde street, in the city of SanFrancisco, county of San Francisco, and State of California, citizens of the United States, have invented certain new and useful Improvements in Crude-Oil Burners; and we do hereby declare the following to be a full, clear, and exact description of said in- Vention, such as will enable others skilled in the art to which it most nearly appertains to make, use, and practice the same.

This invention relates to improvements in crude-cil burners, and particularlp7 to lowpressure oil-burners.

The object sought to be accomplished is to provide a burner capable of complete atomization under an air-pressure of seven ounces and upward,capable of use in connection with a blower or any forced draft system. In boiler-work all the air admitted to the furnace is compelled to pass through the burner. This feature of the invention will be claimed, as the burneris Constructed with thisin view.

The invention consists, broadly, of a barrel having a restricted outlet, dat, round, or annular, to suit circumstances, an atomizingchamber extending back into the barrel from the outlet and consisting of a compound hollow cone focusing at the point of outlet, open at the rear to the air forced through the barrel, and an oil-inlet adapted to spray the oil into the atomizing-chamber in the path of the air-draft, the whole so arranged that a portion of the air admitted will pass through the atomizing-chamber to combine with the oil, the remainder to pass about the atomizing-chamber to the point of outlet to supply the oxygen necessary to a proper combustion Within the furnace.

In the accompanying drawings, Figure l is a longitudinalsectional view on the line l 1, Fig. 2, of a burner constructed to throw a iiat iiame. Fig. 2 isa rear elevation vof the same, looking forward from the iiange-line 2 2, Fig. l. Fig. 3 is a front elevation of Ithe same, looking into the muzzle of the burner. Fig.

4 is a front elevation looking into the atom- Fig. 5 is a longitudinal sec-I Fig. 6 is a rear eleizing-chamber. tion of the oil-injector.

nozzle A2.

vation in cross-section of the same on line 3 3, looking forward. Fig. 7 is a similar view to Fig. 2 of a burner constructed to throw an annular flame. Fig. 8 is a vertical cross-section of the same on line 5 5. Fig. 9 is a lateral cross-section of the same on the line 6 6, Fig. l0, looking rearward. Fig. l0 is a horizontal sectional view on the line 7 7, Fig. 7. Fig. ll is a front elevation of a furnace-front having these burners applied in the approved manner.

ln detail the construction consists of danged elbow A, projecting beyond the furnace-front and providing means of connection between the blower and the burner-barrel A', to which is bolted the restricted nozzle A2. The nozzle terminates in the muzzle A3, having parallel sides, and the lip A4, which gives the iiame an upward tendency. By reason of the low pressure and the fact that the whole volume of air admitted to the furnace must pass through the burner the barrel is given an area in excess of the requirements of simple atomization.

The atomizing-chamber consists of a compound hollow cone made up of a casing divided into independent cone-shaped chambers having distinct inlets B' and B2, converging to a single restricted outlet B3, adapted to form a dat dame. Itis preferably cast in a single piece with the side tongues B4 to slide into the grooves AX in the side of the The outlet of the atomizing-chamber extends into the muzzle of the burner.

The oil-inlet consists of the leads C C, leading into the elbows C', into which the tubes C2 are screwed, the nozzles of said tubes extending into the respective inlets of the atomizing-chamber, being centered thereinby the webs B5. The oil, under pressure of fifteen pounds, more or less, is caused to spray in a thin annular film by the bell-shaped deiecting-head C3, which exactly fills the bore of the tube C2, except for the adjustable annular space CX. The head is provided with the radial Webs C4130 center same within the tube O2. The head is fixed upon the end of the rod C5, adjustably screwed into the plug C6, screwed into the back of the elbow. This permits a ready withdrawal of the mechanisms in the tube C2. The rod C5 is capable IOO of longitudinal adjustment, as evidenced by the lock-nut CG. The oil deflected by the head is ejected from the tube in the form of a thin tulip-shaped film, the volume of which is determined by the space CX.

In connection with very low air-pressure and heavy oils the atomization can be assisted by the introduction of steam into the oil-pipe through the pipe D, set at an angle to the oil column to produce a suction, this principle being Well known.

In the production of an annular Iiame certain changes of form are necessary in the atomizing-chamber and in the muzzle of the burner and in addition-the deflecting-head E, similar in operation to the head C3 in the injection of the oil, as described, the general modus operandi remaining unaltered. In the annular-llame construction the center dividing-wall B6 in the atomizing-chamber at the point of conveyance takes the form of a cone B7, transforming the combustible mixture into an annular column, delivering same against the deflecting-head E, having an outward flare equal in diameter to the diameter of the muzzle of the burner, within which it is centered by the radial webs E.

In operation the burner is supposed to be bricked into the furnace-front or side walls of the furnace from the fiange-line 2 2 to the muzzle, from which the bricks fall away to allow for the expansion of the flame, the ash and damper doors being closed to cause all air to pass through the burner into the furnace. The air under forced draft, impelled by blowers or compressors, rushes through thebarrel of the burner, the proper proportion passing through the atomizingchamber, breaking up and carrying forward the oil sprayed therein to the muzzle of the burner, where it is ignited. The balance of p the volume of air passes around the atomizwe claim, and desire to secure by Letters Patent, is-

l. In a crude-oil burner, the combination of an elbow having a hinged trap with a peephole therein in its outer sweep; a barrel forming a continuation of the said elbow and terminating in a restricted muzzle; an atomizing-chamber consisting of a compound cone having two inlets converging to a common outlet in line with the muzzle of the burner; and means for spraying oil into the inlets of the atomizing-chamber in the path of the air forced through the barrel of the burner: substantially as described.

2. In a crude-oil burner, the combination of a barrel terminating in a restricted muzzle; an atomizing-chamber consisting of a compound cone having two inlets and converging to a common outlet and slidably fixed within the barrel in line with the said muzzle; and means for spraying oil into the said atomizing-chamber in the path of the air forced through the said barrel substantially as described.

3. In a crude-oil burner, the combination of a barrel, a casing located therein, said casing being divided into independent cone-shaped atomizing-chambers, and means for spraying oil into said chambers, as set forth.

4. In acrude-oil burner, the combination of a barrel, a casing located therein, said casing being divided into independent cone-shaped atomizing-chambers, and spraying devices leading into the rear of each of said chambers, as set forth.

5. In a crude-oil burner, the combination of a barrel, a casing slidably fixed therein, said casing being divided into independent coneshaped atomizing-chambers, and means for spraying oil into said chambers, as set forth.

6. In a crude-oil burner, the combination of a barrel terminating in a restricted muzzle, a casing conforming to the contour of said barrel and located therein, said casing being divided into a plurality of cone-shaped atomizing-chambers having independent inlets and converging to a common outlet, means for Spraying oil into said atomizing-chamber, and means for deiiecting the flame as it leaves said muzzle, as set forth.

In testimony whereof we have hereunto set our hands this 5th day of September, 1902.

EDWIN W. TUCKER. CHARLES L. GRUNDELL. Witnesses:

BALDWIN VALE, A. C. DOYLE.

TOO 

